Hi all. Bought a Audi A4 B6 Cabrio a couple of weeks ago and the engine management light keeps coming on for the bank 1 and 2 senors. The machanic in the garage thought id give it a bit too much and its not liked it but then it came on again. Second time he told me to try some v-power fuel to clean the sensors. Nope still came on again. So today its going back in today to see an audi specialist. Car is the 2.4 V6. Please note the light is only coming on when my fuel gets low and it doesnt come on all the time just pretty much at wrrk intervals. Cheers guys.